Combination scale



Aug. l, 1944. B, F. BROWN r 2,354,737

COMBINATION SCALE Filed March 6, 1943 IN V EN TOR. 3g/v FRA NK /vo WN Patented Aug. 1, 1944 UNITED f STATES PATENT OFFICE COMBINATION \SCALE Ben Frank Brown, Zanesville, Ohio Application March 6, 1943, Serial No. 478,187

10 Claims.

This invention relates to combination scales and the like machinists or engineers instruments.

-An object of this invention is to providev a single instrument of the character described which may be used as (a) a depth gauge, (b) a height gauge, (c) outside calipers, (d) hook scale, (e) ,outside square, (f) inside square, (g) drill grinding gauge, (h) bevel protractor, (i) three separate scales of different length, (j) for grindlng 30 threading tool, and setting same at proper angle on the lathe, (k) to measure small angles as clearance on cutting tools. .Y Another object of this invention is to provide a compact, unitary tool or instrument of Ythe character described which shall be relatively inexpensive to manufacture, easy to manipulate, and yet practical and eicient to a high degree in use.

I3, I6, I1.

serves to tighten member I2 to scale I I.

t' Other objects of this invention will in part .be

obvious and in part hereinafter pointed out.

The invention accordingly consists in the features of construction, combinations of elements, and arrangement of parts which will be exemplied in the construction hereinafter described, and of which the scope of application will be indicated in the followingclaims.

Fig. 1 is a perspective view of an instrumentor scale embodying the invention;

Fig. 2 is a side edge View thereof;

Fig, 3 is a side elevational view of. said instrument;

. Fig. 4 is a side elevational ViewY of the improved instrument Aused as a drill grinding gauge; and

f. ner similar to that shown in Fig. 5.

n Fig. 5 is a side elevational view of said instru-` i.:

ment used as a depthr gauge. v Referring now in detail to the drawing, I0 designates a scale or instrument embodying the invention. The same comprises a long scale I I Aand a smaller scale I 2 pivoted thereto.

Scale I I may be a standard 6 steel scale. Adjacent one end edge I3 it is provided with a pivot pin I4 having a threaded stem. The pin or rivet I4 is preferably flush with one surface of the scale I2. The ldistance of the pivot pin I4 to edge I3 is equal to the distance of said pivot pin from the upper and lower edges I6, I1 of scale I I. Thus for a 3A Wide scale the pivot is from the edges I3, I6, I'I.

The smaller scale I 2 is preferably thinner than scale II'. It has a body I8 and an arm I9 extending at right angles thereto. Body portion I8 has a longitudinal edge 20, an end edge 2| eX- tending at right angles thereto, an edge 22 parallel to edge 20, and an edge 23 forming an acute angle with said edge 20. Body portion I8 is 56 formed with an opening receiving pivot pin I4, located a distance from edges 2D and 2| equal to the distance pivot pin I4 is spaced from edges A knurled nut 26 screwed to pin I4 Arm I9 extends from the outer end or apex portion of body 20. It has an outer edge 21 parallel to edge 2 I and of a length equal to the Width of scale I I.

On one face of body I8, adjacent edge 20 is a standard scale or graduation 30 for measuring length. Adjacent edge 23 on the same face is a scale 3| measuring angles which said edge makes with edge IB of scale I I.

On the other face of body I8 are scales 34, 35 graduated for angles edges 20, 23 make with edges Il, IIiofscaleII.

Arm I9 is also providedwith a scale 36.

In Fig, 4 the instrument I0 is shown when used as a drill grinding gauge for drill 3S. ,In Fig'. 5 there is illustrated the use of the `instrument as a depth gauge for akeyslot 40 in shaft 4I. It may also be used as a height gauge in aman- It may be used as an outside calipers, the shaft to be measured being placed between the tipv of arm I9 and scale II. When member I2 is moved into alignment with scale I I, the instrument may p be used as a hook scale, arm I9 being the hook,

and the combined lengths of body I8 and scale I I can be used. When memberl 2 is moved to'positions at right angles to scale Il, the instrument may be used as inside and outside squares.

Due to graduation-s 3l, 34 and 35 the device can be used as a bevel protractor. Furthermore there are three scales of diierent leyngth, to wit: scale II, body I8 (scale 30)V and arm I9 (scale36l). These may be used separately as space permits.. The instrument can also be used as will be obvious Vfor grinding 30 threading tool bits and for setting the same at a proper angle on a lathe.

The heel 40 may be used to measure small angles as clearance on cutting tools.

Member I2 may alsobe vswung down and used as a clip when carrying the instrument in the pocket. Y Y* l YIt will be noted that edge 20 can be aligned with edges I'I or I3. Furthermore vedge 2l can be aligned with edges I6 or II.

It will thus be seen that there is provided a device in which the several objects of this invention are achieved, and which is Well adapted to meet the conditions of practical use.

As various possible embodiments might be made of the above invention, and as various changes 2 might be made in the embodiment above set forth, it is to be understood that all matter herein set forth or shown in the accompanying drawing is to be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. An instrument of the character described, comprising a scale, a member pivoted to one end of the scale, said member having a body of less length than the scale, and having an arm extending at right angles to the body and oi less length than said body, said body having graduations at opposite edges of said body giving angles of saldi edges relative to opposite edges of said scale.

2. An instrument of the character described, comprising a scale, a member pivoted to one end of the scale, said member having a body of less length than the scale, having an arm extending at right angles to the body and of less length than said body, length graduations on said body, and length graduations on said arm, and Vgraduations on an edge oi said body giving angles of said edge to an edge of said scale. 3. An instrument, oi" the character described, comprising a scale, a member pivoted to one end of the scale, said member having a body of less length than the scale, having an arm extending` at right angles to the body and of less length than said body, length graduations on said body, length graduations on said arm, Vsaid body having a longitudinal edge and an opposite edge forming anv acute angle with said longitudinal edge, andA graduations at said opposite edge giving angles of said edge to said scale. 4, An instrument of the character described, comprising a scale, a member pivoted to one end of the scale, said member havinga body of less length than the scale, and having an arm extending at rightangles to the body and of less length than said body, length graduations on said body, and length graduations on said arm, the length of said armjbeing equal to the Width ofy said scale. 5. An instrument of the character described,

comprising a scale, a member pivoted to one end l of the scale, said member having a body of less length than the scale,rhaving an arm extending at right angles to the body and of less length than said body, length graduations on said body,

length graduations on said arm, said body having a longitudinal edgeand an opposite edge forming an acute angle Wi-th said longitudinal edge, and graduations at said opposite edge giving angles of said edge to said scale, the length of said arm being equal to thewidth of said scale. 6. Aninstrument of the character described, comprising a scale, a flat member pivoted thereto, and having a longitudinal edge adaptedv to beV aligned with one longitudinal edge of said scale, said member having anedge at right angles to its said longitudinal edge, and an edge opposite said longitudinal edge and forming an acute angle thereto, said member having an arm at its outer apex end extending at right angles to the longitudinal edge of said member. f

7. An instrument of the character described, comprising a scale, a iiat member pivoted thereto, and having a longitudinal edge adapted to be aligned with one longitudinal edge of said scale, said member having an edge at right angles to its said longitudinal edge, an edge opposite said longitudinal edge and forming an acute an le thereto, said member having an arm at its ou er apex end extending at right angles to the longitudinal edge of said member, the pivot being located equal distances from opposite longitudinal edges of said scale andan end edge of said scale, and a like distance from the longitudinal edge of said membergand from the edge of said member at right angles to its said longitudinal edge.

8. An instrument of the character described,

A comprising a scale, a flat member pivoted thereto,

and having a longitudinal edge adapted to be aligned with one longitudinal edge of said scale, said member having an edge at right angles to its said longitudinal edge, an edge opposite said longitudinal edge and forming an acute angle thereto, said member having an arm at its outer apex end extending at right angles to the longitudinal vedge of said member, the pivot being located equal distances from opposite longitudinal edges of said scale and an end edge of said scale, a like'distance from the longitudinal edge of, said member and from the edge of said member at, right angles toits said longitudinal edge, and length scale graduations at said longitudinal edge of said' member, and on said arm.

9. An instrument of the character described, comprising a scale, a flat member pivoted thereto, and having a longitudinal edge adapted to be aligned with one longitudinal edge of said scale', said' member having an edge at right angles to itsA said longitudinal edge, anv edge opposite said. longitudinal edge andy forming an acute angle' thereto, said member having an arm at its outer apex end extending at right angles to the longitudinal edge of said member, the pivot being located equal distantes from opposite longitudinal edges of said scale and an end edge of said scale, a like distance from the longitudinal edge of said member and from the edge of said member at right anglesto its said longitudinal edge, and length scale graduations at said longitudinal edge of said member, and on said arm, and angle grad. uations at said opposite edge of said member.

10. An instrument of the character described,v comprising a scale, a flat member pivoted thereto, and having a longitudinal edge adapted to be aligned with one longitudinal edge of said scale,l said member having an edge at right angles to its said longitudinal edge an edge opposite said longitudinal edge and forming an acute angle thereto, said member having an arm at its outer apex end extending at right angles to the longitudinal edge of said member, the, pivot beingl located equal distances from opposite longitudinalr edges of said scale and anA end edge of said scale,` a like distance from the longitudinal edge of said member and from the edge of said member at` right angles to its said longitudinal edge, and length scale graduations at said longitudinal edge of said member, and on said arm, and angle graduations at said opposite edge of said member, said member being thinner than said scale.

. BEN FRANK BROWN. 

